Trend Micro SafeSync Cloud Service

All the services we looked at offer extensive security measures, but if storing things in the cloud still makes you a little nervous, you can rest easy with SafeSync from Trend Micro, a company that's been in the business of antivirus software and security for more than 20 years. Like Dropbox, SafeSync offers 256-bit SSL encryption, the same level of security as your bank. Trend Micro also boasts plenty of support options should you have any questions — e-mail support, tutorials, instant messaging, and more. The only thing you'll miss is phone support.

To get started, just sign up for the service and select which folders and files you want to back up. Everything will be synced to all of your devices with the SafeSync application, as well as to the cloud. SafeSync also saves the last 10 versions of your files, so you'll be able to go back in time to find a document if the latest version gets overwritten or corrupted. You'll also have granular controls over sharing; it's easy to share files, plus you can set passwords or expiration dates for accessing and making changes to documents.

SafeSync also offers some nifty extras, including the ability to stream music and HD video and one-click uploads to Facebook and other social networking sites. Unfortunately, there's no free storage option beyond a 30-day trial, but 20GB of storage space will only set you back $40 a year.